Local DNS not reliable

???

It’s written here

I repeated it in 9 posts above.

and here

You are reading ?

To use my desktop PC and my laptop with the same keyboard/mouse, i use the “Logitech Flow” mechanism (KVM by ethernet)
But I had a big problem because of the host name of the laptop (Logitech Flow Loss of connection for 30s every 5s) :

But generally speaking, you understand that this situation is abnormal:
Having two or more IPs for the same host in local DNS